APA-referens (7:e uppl.)

Ammen, C. W. (1997). Recovery and refining of precious metals (2a. ed.). C.W. Ammen Maic.

Chicago-referens (17:e uppl.)

Ammen, C. W. Recovery and Refining of Precious Metals. 2a. ed. Manitou Springs: C.W. Ammen Maic, 1997.

MLA-referens (9:e uppl.)

Ammen, C. W. Recovery and Refining of Precious Metals. 2a. ed. C.W. Ammen Maic, 1997.